Android and compatibility with deprecated armv7 instructions

[Mark Brown]

On Wed, Jul 02, 2014 at 11:01:33AM +0100, Will Deacon wrote:

>   (1) The hardware doesn't have the instruction at all. If we start
>       emulating it, then we'll always have to emulate it and it doesn't
>       encourage software migration.

That's what the logging other architectures did in similar situations
was intended to help address - even if people don't care about the
performance impact having loud complaints in the logs tends to cause
some useful subset of users to report it as a problem.
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